Dell PowerVault MD 34XX/38XX Series Storage Arrays CLI Guide

Before you create any replication relationships, virtual disks must exist at both the primary site and the secondary site. The virtual disk that resides on the local storage array is the primary virtual disk. Similarly, the virtual disk that resides on the remote storage array is the secondary virtual disk. If neither the primary virtual disk nor the secondary virtual disk exist, you must create these virtual disks. Keep these guidelines in mind when you create the secondary virtual disk:

• The secondary virtual disk must be of equal or greater size than the primary virtual disk.
• The RAID level of the secondary virtual disk does not have to be the same as the primary virtual disk.